hallo ....i am a freshie this yr......of course got my fair share of experiences here...on my first day ....share anything that happens to u or anyone here........yesterday at the lt4aa.....the lecturer was using a mic with headphones...then someone;s hp got msg or something and the interference caused a sound mah....then we all heard the ' den den den ' sound ...that kind if u put yr hp at the speakers then got someone msg or call u that kind of noise....